I think I should leave but I cant

I know deep down we won’t last. I’m a doer and he is lazy. I’m romantic and he is bare minimum. I have talked and talked and talked and given him the easiest ways to make me happy and I’ve laid it all out for him, but there is no change. I’m not a priority compared to his friends, he will never be able to change and give me what I want and I understand that now. The cons out list the pros right now. But the thought of leaving him makes me sick and I don’t think I can do it. I’ll be sad if I leave him but sad if I stay and I’d rather be sad but still able to text him Goodmorning and goodnight everyday than not have him at all. But I know we are not comparable long term. I’m stuck and I just wish he could be perfect for me and be my soulmate but I just think he’s too immature. Any advice ladies? I’ve done all the talking to him about my feelings I can and we’ve only been together 1 year and 7 months